The classic structure with winding folds has been thoroughly optimized for efficiency.
Three closely spaced folds, converging from three directions, create an overwhelming sensation of tightness!
Equipped with the "Optimized Sperm Extraction Structure Ver. 2.0," which ensures excellent acceleration and thus increased pleasure, offers outstanding endurance thanks to optimized stimulation intensity and tempo, and guarantees that you reach the finish line in top form!
Illustration: Sakurai Energy